The Stroft Cutter-Ring is a ring that extends beyond the line spool on both sides and, together with the spool holder, forms a closed housing. This perfectly protects the line from UV radiation and sunlight. In addition, the closed case allows easier handling. You can hold the case anywhere and easily unwind the desired line from the inside of the stored spool.
These Cutter-Rings can be provided with a self-adhesive label around their perimeter, which is part of the delivery and serves to indicate the diameter and type of line. The description is important only when using the whole set. You can use labels with different colors for different types of lines.
You can rotate with Cutter-Rings very well on the spools, they are very easily replaceable (e.g. when the spool is empty) and reusable.
